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通过对10年生中林46杨的杨尺蠖危害株和防治株进行树干解析测定,对比分析出两种类型样株的胸径、材积生长过程,结果表明,实施烟雾机防治后,每株每年平均增加立木材积0.03551m3,增加产值14.91元,除去防治费用,单株可净增值14.83元,经济效益十分显著。
The tree diameter of 10-year-old Zhonglin 46 poplar and its control strain were analyzed by trunk analysis. The DBH and volume growth of two types of samples were compared and analyzed. The results showed that average annual increase Standing timber volume 0.03551m3, an increase of output value 14.91 yuan, remove the prevention and treatment costs, the net value of 14.83 yuan per plant, the economic efficiency is very significant.